Abstract: Secondary strontium residue was used to dispose chromium-containing wastewater and the effects of various technologic factors on removing efficency of Cr(Ⅵ) were investigated.Research showed that the activation of secondary residue can enhance removing efficency of Cr(Ⅵ),and the removal ratio increased with the decrease of its grain diameter.Removal action had fractal kinetic characteristic.Proper disposal conditions of Cr(Ⅵ) had been obtained as follows:ratio of the wastewater volume and secondary residue mass was 25 mL/g,pH=10,t=40 ℃,and disposal time was 60 min.Under the optimum conditions,removal ratio of Cr(Ⅵ) could reach 82.5%.

Key words: strontium waste residues, chromium-containing wastewater, comprehensive utilization of resources